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Dispensing device with elastically driven mixer

A technology of mixing device and mixing element, which is applied in the directions of mixers with rotating containers, mixers with rotating stirring devices, shaking/oscillating/vibrating mixers, etc., can solve the deterioration and obstacles of cemented bone and prosthesis connection and other problems, to achieve the effect of triggering and applying humanized, low energy loss, simple and cheap design

Inactive Publication Date: 2016-03-09
HERAEUS MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, mixing PMMA bone cement often requires some effort, which can be a hindrance during the often hectic routine during surgery
Insufficient cement mixing can lead to deterioration of the connection between the cemented bone and the prosthesis, which is definitely not advisable

Method used

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  • Dispensing device with elastically driven mixer
  • Dispensing device with elastically driven mixer
  • Dispensing device with elastically driven mixer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0087] figure 1 and figure 2 a schematic cross-sectional view showing details of a vacuum mixing system according to the invention having a mixing device according to the invention for carrying out the method according to the invention, and image 3 A perspective schematic diagram of a partial section is shown. figure 1 and image 3 shows the locked state, and figure 2 The unlocked state is shown.

[0088] The vacuum mixing system has a cement cylinder 1 which consists of plastic material and which delimits a cylindrical mixing space 2 on its inner side. floor side distribution opening (in figure 1 and figure 2 , on the bottom) has a stirring shaft 3 guided through this opening, which is supported in a rotatable manner and has four mixing blades 4 attached thereto as mixing elements. The mixing blade 4 is connected to the mixing shaft 3 by means of a joint and can thus be placed against the mixing shaft 3 so that the mixing shaft 3 can be inserted into and pulled out...

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Abstract

The invention relates to a dispensing device with an elastically driven mixer, and particularly relates to a mixing device for polymethylmethacrylate bone cement. The mixing device comprises a mixing space (2) for mixing the polymethylmethacrylate bone cement, at least one mixing element (4) supported in the mixing space such that it can rotate, a gear for rotating the at least one mixing element, and at least one elastically deformable energy-storing element (16) that is connected to the gear such that the gear can be driven by an elastic energy from the energy-storing element (16) and such that the at least one mixing element (4) can be rotated in the mixing space by means of the gear upon the release of elastic energy from the energy-storing element. Additionally, a vacuum mixing system and mixing method comprise the mixing device for mixing the bone cement.

Description

technical field [0001] The invention relates to a mixing device for polymethyl methacrylate bone cement (PMMA bone cement). [0002] The invention also relates to a vacuum mixing system comprising a mixing device of this type and a method for mixing cement, especially PMMA bone cement. [0003] The subject of the present invention is therefore a mixing device for homogenizing cement components of a powder-liquid polymethylmethacrylate bone cement. Another subject of the invention is a closed vacuum mixing system for storing, mixing and dispensing polymethylmethacrylate bone cement. Background technique [0004] The polymethyl methacrylate (PMMA) bone cement is based on the pioneering work of Mr. Charnley. PMMA bone cement consists of a liquid monomer component and a powder component. The monomer component generally includes monomer, methyl methacrylate, and an activator dissolved therein. The powder component, also called bone cement powder, includes one or more polymers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F7/18B01F13/06B01F3/12B01F23/57B01F29/63
CPCF03G1/02B01F27/073B01F31/40B01F33/5012B01F35/32005B01F35/718B01F35/754251B01F2101/20A61B17/8833A61B2017/8838
Inventor S.福格特T.克卢格
Owner HERAEUS MEDICAL
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